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<article>
<h2>XQuery mode</h2>


<div class="cm-s-default">
	<textarea id="code" name="code">
xquery version &quot;1.0-ml&quot;;
(: this is
 : a
   "comment" :)
let $let := &lt;x attr=&quot;value&quot;&gt;&quot;test&quot;&lt;func&gt;function() $var {function()} {$var}&lt;/func&gt;&lt;/x&gt;
let $joe:=1
return element element {
	attribute attribute { 1 },
	element test { &#39;a&#39; },
	attribute foo { &quot;bar&quot; },
	fn:doc()[ foo/@bar eq $let ],
	//x }

(: a more 'evil' test :)
(: Modified Blakeley example (: with nested comment :) ... :)
declare private function local:declare() {()};
declare private function local:private() {()};
declare private function local:function() {()};
declare private function local:local() {()};
let $let := &lt;let&gt;let $let := &quot;let&quot;&lt;/let&gt;
return element element {
	attribute attribute { try { xdmp:version() } catch($e) { xdmp:log($e) } },
	attribute fn:doc { &quot;bar&quot; castable as xs:string },
	element text { text { &quot;text&quot; } },
	fn:doc()[ child::eq/(@bar | attribute::attribute) eq $let ],
	//fn:doc
}



xquery version &quot;1.0-ml&quot;;

(: Copyright 2006-2010 Mark Logic Corporation. :)

(:
 : Licensed under the Apache License, Version 2.0 (the &quot;License&quot;);
 : you may not use this file except in compliance with the License.
 : You may obtain a copy of the License at
 :
 :     http://www.apache.org/licenses/LICENSE-2.0
 :
 : Unless required by applicable law or agreed to in writing, software
 : distributed under the License is distributed on an &quot;AS IS&quot; BASIS,
 : WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 : See the License for the specific language governing permissions and
 : limitations under the License.
 :)

module namespace json = &quot;http://marklogic.com/json&quot;;
declare default function namespace &quot;http://www.w3.org/2005/xpath-functions&quot;;

(: Need to backslash escape any double quotes, backslashes, and newlines :)
declare function json:escape($s as xs:string) as xs:string {
  let $s := replace($s, &quot;\\&quot;, &quot;\\\\&quot;)
  let $s := replace($s, &quot;&quot;&quot;&quot;, &quot;\\&quot;&quot;&quot;)
  let $s := replace($s, codepoints-to-string((13, 10)), &quot;\\n&quot;)
  let $s := replace($s, codepoints-to-string(13), &quot;\\n&quot;)
  let $s := replace($s, codepoints-to-string(10), &quot;\\n&quot;)
  return $s
};

declare function json:atomize($x as element()) as xs:string {
  if (count($x/node()) = 0) then 'null'
  else if ($x/@type = &quot;number&quot;) then
    let $castable := $x castable as xs:float or
                     $x castable as xs:double or
                     $x castable as xs:decimal
    return
    if ($castable) then xs:string($x)
    else error(concat(&quot;Not a number: &quot;, xdmp:describe($x)))
  else if ($x/@type = &quot;boolean&quot;) then
    let $castable := $x castable as xs:boolean
    return
    if ($castable) then xs:string(xs:boolean($x))
    else error(concat(&quot;Not a boolean: &quot;, xdmp:describe($x)))
  else concat('&quot;', json:escape($x), '&quot;')
};

(: Print the thing that comes after the colon :)
declare function json:print-value($x as element()) as xs:string {
  if (count($x/*) = 0) then
    json:atomize($x)
  else if ($x/@quote = &quot;true&quot;) then
    concat('&quot;', json:escape(xdmp:quote($x/node())), '&quot;')
  else
    string-join(('{',
      string-join(for $i in $x/* return json:print-name-value($i), &quot;,&quot;),
    '}'), &quot;&quot;)
};

(: Print the name and value both :)
declare function json:print-name-value($x as element()) as xs:string? {
  let $name := name($x)
  let $first-in-array :=
    count($x/preceding-sibling::*[name(.) = $name]) = 0 and
    (count($x/following-sibling::*[name(.) = $name]) &gt; 0 or $x/@array = &quot;true&quot;)
  let $later-in-array := count($x/preceding-sibling::*[name(.) = $name]) &gt; 0
  return

  if ($later-in-array) then
    ()  (: I was handled previously :)
  else if ($first-in-array) then
    string-join(('&quot;', json:escape($name), '&quot;:[',
      string-join((for $i in ($x, $x/following-sibling::*[name(.) = $name]) return json:print-value($i)), &quot;,&quot;),
    ']'), &quot;&quot;)
   else
     string-join(('&quot;', json:escape($name), '&quot;:', json:print-value($x)), &quot;&quot;)
};

(:~
  Transforms an XML element into a JSON string representation.  See http://json.org.
  &lt;p/&gt;
  Sample usage:
  &lt;pre&gt;
    xquery version &quot;1.0-ml&quot;;
    import module namespace json=&quot;http://marklogic.com/json&quot; at &quot;json.xqy&quot;;
    json:serialize(&amp;lt;foo&amp;gt;&amp;lt;bar&amp;gt;kid&amp;lt;/bar&amp;gt;&amp;lt;/foo&amp;gt;)
  &lt;/pre&gt;
  Sample transformations:
  &lt;pre&gt;
  &amp;lt;e/&amp;gt; becomes {&quot;e&quot;:null}
  &amp;lt;e&amp;gt;text&amp;lt;/e&amp;gt; becomes {&quot;e&quot;:&quot;text&quot;}
  &amp;lt;e&amp;gt;quote &quot; escaping&amp;lt;/e&amp;gt; becomes {&quot;e&quot;:&quot;quote \&quot; escaping&quot;}
  &amp;lt;e&amp;gt;backslash \ escaping&amp;lt;/e&amp;gt; becomes {&quot;e&quot;:&quot;backslash \\ escaping&quot;}
  &amp;lt;e&amp;gt;&amp;lt;a&amp;gt;text1&amp;lt;/a&amp;gt;&amp;lt;b&amp;gt;text2&amp;lt;/b&amp;gt;&amp;lt;/e&amp;gt; becomes {&quot;e&quot;:{&quot;a&quot;:&quot;text1&quot;,&quot;b&quot;:&quot;text2&quot;}}
  &amp;lt;e&amp;gt;&amp;lt;a&amp;gt;text1&amp;lt;/a&amp;gt;&amp;lt;a&amp;gt;text2&amp;lt;/a&amp;gt;&amp;lt;/e&amp;gt; becomes {&quot;e&quot;:{&quot;a&quot;:[&quot;text1&quot;,&quot;text2&quot;]}}
  &amp;lt;e&amp;gt;&amp;lt;a array=&quot;true&quot;&amp;gt;text1&amp;lt;/a&amp;gt;&amp;lt;/e&amp;gt; becomes {&quot;e&quot;:{&quot;a&quot;:[&quot;text1&quot;]}}
  &amp;lt;e&amp;gt;&amp;lt;a type=&quot;boolean&quot;&amp;gt;false&amp;lt;/a&amp;gt;&amp;lt;/e&amp;gt; becomes {&quot;e&quot;:{&quot;a&quot;:false}}
  &amp;lt;e&amp;gt;&amp;lt;a type=&quot;number&quot;&amp;gt;123.5&amp;lt;/a&amp;gt;&amp;lt;/e&amp;gt; becomes {&quot;e&quot;:{&quot;a&quot;:123.5}}
  &amp;lt;e quote=&quot;true&quot;&amp;gt;&amp;lt;div attrib=&quot;value&quot;/&amp;gt;&amp;lt;/e&amp;gt; becomes {&quot;e&quot;:&quot;&amp;lt;div attrib=\&quot;value\&quot;/&amp;gt;&quot;}
  &lt;/pre&gt;
  &lt;p/&gt;
  Namespace URIs are ignored.  Namespace prefixes are included in the JSON name.
  &lt;p/&gt;
  Attributes are ignored, except for the special attribute @array=&quot;true&quot; that
  indicates the JSON serialization should write the node, even if single, as an
  array, and the attribute @type that can be set to &quot;boolean&quot; or &quot;number&quot; to
  dictate the value should be written as that type (unquoted).  There's also
  an @quote attribute that when set to true writes the inner content as text
  rather than as structured JSON, useful for sending some XHTML over the
  wire.
  &lt;p/&gt;
  Text nodes within mixed content are ignored.

  @param $x Element node to convert
  @return String holding JSON serialized representation of $x

  @author Jason Hunter
  @version 1.0.1

  Ported to xquery 1.0-ml; double escaped backslashes in json:escape
:)
declare function json:serialize($x as element())  as xs:string {
  string-join(('{', json:print-name-value($x), '}'), &quot;&quot;)
};
  </textarea>
</div>

    <script>
      var editor = CodeMirror.fromTextArea(document.getElementById("code"), {
        lineNumbers: true,
        matchBrackets: true,
        theme: "xq-dark"
      });
    </script>

    <p><strong>MIME types defined:</strong> <code>application/xquery</code>.</p>

    <p>Development of the CodeMirror XQuery mode was sponsored by
      <a href="http://marklogic.com">MarkLogic</a> and developed by
      <a href="https://twitter.com/mbrevoort">Mike Brevoort</a>.
    </p>

  </article>